That's kind of weird. Are your img tags being correctly rendered or are they getting modified before rendering?

Not that I know. I updated today to phpBB 3.2, all standard files
And had the same problem. Changed that code again, and it worked..
And I don't think any of my extension are touching img tags.. except "Posting Buttons"

You would have to see what actually renders in your posts for img tags. I can't imagine why something would be changing your img tags but I imagine your code change is needed because the original matching of <img class="postimage" alt="image" src="image URL" />, which would be a standard default image, isn't matching what is being produced for posts on your forum.

You would have to see what actually renders in your posts for img tags. I can't imagine why something would be changing your img tags but I imagine your code change is needed because the original matching of <img class="postimage" alt="image" src="image URL" />, which would be a standard default image, isn't matching what is being produced for posts on your forum.

It works, so no need to look into those things I guess..
There are no errors, and http images are successfully being replaced by the camo script.
As long as everything works I see no problem